Dutch Elm Disease
A comprehensive reference for the identification, treatment, prevention, biology, and history of Dutch Elm Disease — a vascular wilt caused by Ophiostoma fungi that has reshaped urban canopies across North America and Europe since 1930.
The reference is organized into topical clusters. Entry points include What is Dutch Elm Disease? for the basics, the Dutch Elm Disease Symptom Checker for suspected infections, and the Differential Diagnosis Guide for distinguishing DED from lookalikes.
Complete Guide Topics
Disease Identification Guide
Learn to recognize Dutch Elm Disease symptoms and get professional diagnosis
- What Are the Symptoms of Dutch Elm Disease?
- How Does Dutch Elm Disease Look Like?
- How Does Dutch Elm Disease Spread in a Tree?
- Who Should I Contact if I See Dutch Elm Disease?
Differential Diagnosis
Tell Dutch Elm Disease apart from lookalike conditions
- Dutch Elm Disease Symptom Checker
- Elm Yellows vs Dutch Elm Disease
- Verticillium Wilt vs Dutch Elm Disease
- Bacterial Leaf Scorch vs Dutch Elm Disease
- Elm Anthracnose vs Dutch Elm Disease
- Drought Stress vs Dutch Elm Disease
- Herbicide Injury vs Dutch Elm Disease
Treatment & Management Guide
Comprehensive treatment options and management strategies
- Can Dutch Elm Disease Be Treated?
- Can Dutch Elm Disease Be Cured?
- What Preventative Treatments Exist for Dutch Elm Disease?
- What Can I Do to Prevent the Spread of Dutch Elm Disease?
Disease-Resistant Varieties
Guide to resistant elm cultivars and selection
Elm Species
Field guide to elm species and how to identify them
- How to Identify an Elm Tree
- American Elm (Ulmus americana)
- English Elm (Ulmus minor)
- Wych Elm (Ulmus glabra)
- Chinese Elm (Ulmus parvifolia)
- Siberian Elm (Ulmus pumila)
- Slippery Elm (Ulmus rubra)
Disease Biology & Causes
Understanding the science behind Dutch Elm Disease
- What is Dutch Elm Disease?
- What Causes Dutch Elm Disease?
- Where Did Dutch Elm Disease Come From?
- What Is The Range of Dutch Elm Disease?
- Can Firewood Spread Dutch Elm Disease?
- What Are Sac Fungi?
Safety & Practical Guide
Safety considerations and practical guidance
Research & Future
Current research and future developments
- Which Universities and Researchers Are Studying Dutch Elm Disease?
- Can Artificial Intelligence Help Cure Dutch Elm Disease?
- Will Dutch Elm Disease Make Elms Extinct?
Essential Information
Tree Basics
- What are Dutch Elm trees? - Understanding elm species and characteristics
This site provides evidence-based information to help tree owners, arborists, and communities understand and manage Dutch Elm Disease effectively.